Python-сообщество

class Pattern(Declarative):
    __tablename__ = 'patterns'
    pk = Column(Integer, primary_key=True)
    title = Column(String(30), nullable=False, unique=True)
    image = Column(Text, nullable=False)
    mask = Column(Text, nullable=False)
    sign = Column(Text, nullable=False)
    sign_coords = Column(Text, nullable=False)
    heads = Column(Integer, nullable=False)
    heads_coords = Column(Text, nullable=False)
    caption = Column(Text, nullable=False)
    added = Column(Boolean, nullable=False)
    
    def __init__(self, title, image, mask, sign, sign_coords, heads,
            heads_coords, caption, added):       
        self.title = title
        self.image = image
        self.mask = mask
        self.sign = sign
        self.sign_coords = json_encode(sign_coords)
        self.heads = heads
        self.heads_coords = json_encode(heads_coords)
        self.caption = caption
        self.added = added